TCCI: taming co-channel interference for wireless lans
TCCI: taming co-channel interference for wireless lans
复制标题
DOI：
10.1145/3397166.3409138
复制
发表时间：
2020-10
期刊：
影响因子：
--
通讯作者：
Adnan Quadri;Hossein Pirayesh;Pedram Kheirkhah Sangdeh;Huacheng Zeng
中科院分区：
文献类型：
--
作者：
Adnan Quadri;Hossein Pirayesh;Pedram Kheirkhah Sangdeh;Huacheng Zeng
同信道干扰是无线局域网（WLAN）中的一个基本问题。虽然已经开发了许多结果来处理同信道干扰的并发传输，他们中的大多数需要网络范围内的细粒度同步和接入点（AP）之间的数据共享。然而，由于其硬件限制和数据隐私问题，这种奢侈品在许多WLAN中是负担不起的。在本文中，我们提出了TCCI，共信道干扰管理计划，使并发传输的无线局域网。TCCI既不需要网络范围的细粒度同步，也不需要网络间的数据共享，因此适合于现实世界的实现。TCCI的使能器是用于AP的新的检测和波束形成方法，其能够通过利用其多个天线来驯服未知干扰。我们已经在无线测试平台上构建了TCCI原型，并证明了其与商用Atheros 802.11设备的兼容性。我们的实验结果表明，TCCI允许共同定位的AP同时为他们的用户提供服务，并实现了高达113%的吞吐量增益相比，现有的干扰避免协议。
Co-channel interference is a fundamental issue in wireless local area networks (WLANs). Although many results have been developed to handle co-channel interference for concurrent transmission, most of them require network-wide fine-grained synchronization and data sharing among access points (APs). Such luxuries, however, are not affordable in many WLANs due to their hardware limitation and data privacy concern. In this paper, we present TCCI, a co-channel interference management scheme to enable concurrent transmission in WLANs. TCCI requires neither network-wide fine-grained synchronization nor inter-network data sharing, and therefore is amenable to real-world implementation. The enabler of TCCI is a new detection and beamforming method for an AP, which is capable of taming unknown interference by leveraging its multiple antennas. We have built a prototype of TCCI on a wireless testbed and demonstrated its compatibility with commercial Atheros 802.11 devices. Our experimental results show that TCCI allows co-located APs to serve their users simultaneously and achieves up to 113% throughput gain compared to existing interference-avoidance protocol.